subjects were asked to deliver a short presentation to a roomful of people who had been instructed by experimenters to remain stone-faced and silent. They played the Give-Some Game afterward. You might imagine that the subjects who endured this difficult experience would respond by becoming less cooperative, but the opposite turned out to be true: the speakers’ cooperation levels increased by 50 percent. That moment of vulnerability did not reduce willingness to cooperate but boosted it. The inverse was also true: Increasing people’s sense of power—that is, tweaking a situation to make them
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